org.elasticsearch.index.query.GeoBoundingBoxFilterParser Maven / Gradle / Ivy
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* Licensed to ElasticSearch and Shay Banon under one
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* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch licenses this
* file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.index.query;
import org.apache.lucene.search.Filter;
import org.elasticsearch.common.geo.GeoHashUtils;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.geo.GeoUtils;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.cache.filter.support.CacheKeyFilter;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.mapper.geo.GeoPointFieldMapper;
import org.elasticsearch.index.search.geo.InMemoryGeoBoundingBoxFilter;
import org.elasticsearch.index.search.geo.IndexedGeoBoundingBoxFilter;
import java.io.IOException;
import static org.elasticsearch.index.query.support.QueryParsers.wrapSmartNameFilter;
/**
*
*/
public class GeoBoundingBoxFilterParser implements FilterParser {
public static final String NAME = "geo_bbox";
@Inject
public GeoBoundingBoxFilterParser() {
}
@Override
public String[] names() {
return new String[]{NAME, "geoBbox", "geo_bounding_box", "geoBoundingBox"};
}
@Override
public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
boolean cache = false;
CacheKeyFilter.Key cacheKey = null;
String fieldName = null;
GeoPoint topLeft = new GeoPoint();
GeoPoint bottomRight = new GeoPoint();
String filterName = null;
String currentFieldName = null;
XContentParser.Token token;
boolean normalize = true;
String type = "memory";
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
fieldName = currentFieldName;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_ARRAY) {
GeoPoint point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
token = parser.nextToken();
point.resetLon(parser.doubleValue());
token = parser.nextToken();
point.resetLat(parser.doubleValue());
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
}
}
} else if (token == XContentParser.Token.START_OBJECT) {
GeoPoint point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if (currentFieldName.equals(GeoPointFieldMapper.Names.LAT)) {
point.resetLat(parser.doubleValue());
} else if (currentFieldName.equals(GeoPointFieldMapper.Names.LON)) {
point.resetLon(parser.doubleValue());
} else if (currentFieldName.equals(GeoPointFieldMapper.Names.GEOHASH)) {
GeoHashUtils.decode(parser.text(), point);
}
}
}
}
} else if (token.isValue()) {
if ("field".equals(currentFieldName)) {
fieldName = parser.text();
} else {
GeoPoint point = null;
if ("top_left".equals(currentFieldName) || "topLeft".equals(currentFieldName)) {
point = topLeft;
} else if ("bottom_right".equals(currentFieldName) || "bottomRight".equals(currentFieldName)) {
point = bottomRight;
}
if (point != null) {
String value = parser.text();
point.resetFromString(value);
}
}
}
}
} else if (token.isValue()) {
if ("_name".equals(currentFieldName)) {
filterName = parser.text();
} else if ("_cache".equals(currentFieldName)) {
cache = parser.booleanValue();
} else if ("_cache_key".equals(currentFieldName) || "_cacheKey".equals(currentFieldName)) {
cacheKey = new CacheKeyFilter.Key(parser.text());
} else if ("normalize".equals(currentFieldName)) {
normalize = parser.booleanValue();
} else if ("type".equals(currentFieldName)) {
type = parser.text();
} else {
throw new QueryParsingException(parseContext.index(), "[geo_bbox] filter does not support [" + currentFieldName + "]");
}
}
}
if (normalize) {
GeoUtils.normalizePoint(topLeft);
GeoUtils.normalizePoint(bottomRight);
}
MapperService.SmartNameFieldMappers smartMappers = parseContext.smartFieldMappers(fieldName);
if (smartMappers == null || !smartMappers.hasMapper()) {
throw new QueryParsingException(parseContext.index(), "failed to find geo_point field [" + fieldName + "]");
}
FieldMapper mapper = smartMappers.mapper();
if (!(mapper instanceof GeoPointFieldMapper.GeoStringFieldMapper)) {
throw new QueryParsingException(parseContext.index(), "field [" + fieldName + "] is not a geo_point field");
}
GeoPointFieldMapper geoMapper = ((GeoPointFieldMapper.GeoStringFieldMapper) mapper).geoMapper();
Filter filter;
if ("indexed".equals(type)) {
filter = IndexedGeoBoundingBoxFilter.create(topLeft, bottomRight, geoMapper);
} else if ("memory".equals(type)) {
IndexGeoPointFieldData indexFieldData = parseContext.fieldData().getForField(mapper);
filter = new InMemoryGeoBoundingBoxFilter(topLeft, bottomRight, indexFieldData);
} else {
throw new QueryParsingException(parseContext.index(), "geo bounding box type [" + type + "] not supported, either 'indexed' or 'memory' are allowed");
}
if (cache) {
filter = parseContext.cacheFilter(filter, cacheKey);
}
filter = wrapSmartNameFilter(filter, smartMappers, parseContext);
if (filterName != null) {
parseContext.addNamedFilter(filterName, filter);
}
return filter;
}
}